RipEX1-Base Configuration

3. RipEX1-Base Configuration

Fig. 3.1: Centre configuration

In the Settings menu, change the Unit name to RipEX1-Base. The
Operating mode is set to “Router” (“GRE” is not configurable in the Bridge
mode).

Within the Radio parameters, “Flexible” mode is set. Configure the
10.10.10.1/255.255.255.0 IP address/netmask parameters. The frequency must
be the same for all RipEX units, but otherwise is configurable as
required. The channel spacing is set to 25 kHz and Modulation rate to
16DEQAM (83.33 kbps).

NOTE: The parameters marked with a small red square
must be the same within all RipEX units in network.

The last step is the Ethernet IP configuration – 192.168.131.238 /
255.255.255.0.

Fig. 3.2: Centre station GRE configuration

GRE configuration is very straight-forward (all parameters are
described at the beginning of this chapter). The Peer address is set to
RipEX2-Remote Ethernet address – 192.168.141.239. The tunnel address
should not overlap with any other subnet in the network.

IMPORTANT: The GRE tunnel only ever uses two IP
addresses; thus the /31 mask is recommended.

Because the local GRE IP address was set as 10.2.2.0 the remote must
be set to 10.2.2.1. The check box “Active” is enabled.

Fig. 3.3: Centre station routing rules

The last menu to configure is “Routing”. Together, 6 routes are
configured in this example. You might configure different rules, but be
consistent across all RipEX units.

192.168.141.239/32, Gateway 192.168.131.254

This route will probably be different in your network –
usually it is the nearest router that handles routing in your
existing L3 network. For testing purposes, you can use our
cellular router M!DGE.

The routing rule for RipEX2-Remote Ethernet subnet is
required due to the accessibility of this remote RipEX unit
-> correct GRE tunnel functionality.

192.168.141.0/24, Gateway 10.2.2.1

This route is used for all other units in 192.168.141.0/24
subnet and is routed to the RipEX2-Remote unit via GRE
tunnel.

172.16.100.0/24, Gateway 10.10.10.3

Route to the RipEX3-Remote unit – no GRE tunnel is used,
common radio transmission.

172.20.20.0/30, 172.20.20.4/30 and 172.16.200.0/24, Gateway
10.2.2.1

Three routes to remote RipEX networks – as a gateway,
10.2.2.1 Remote GRE IP address is used -> no need
to add any routing rules in the existing L3 network.